Inspector Dom Wood says it is "quite clear that alcohol is the primary factor in this crash".

The baby's grandfather Stephen Clarke says it is impossible to put his grief into words.

He says his grandson was an amazing little boy.

"Obviously for the Clarke and Dunbar families this is a very distressing time, particularly in light of what has happened with the Dunbar family in light of other family members who are deceased," he said.

"We are trying to overcome the loss of little Nate Troy Dunbar who was my grandson, eight-months-old.

"I'd also like to take the opportunity to thank the Emergency Services, in particular police and ambulance for all their help this morning.

"I just don't have the words to express how I feel at the moment, it's going to be so sad. So sad.

"He was just amazing, you'll see from his picture and hopefully the people out there will see the picture you see is the boy he was.

"It's just so sad and hopefully y'know you see this time and time again when people are on the TV and its saying the same thing, please slow down, just don't put other families what we're going through."

Neighbours gathered outside the home after the accident to offer their support to the young family.

They described the family as 'lovely' and the situation as devastating.